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// Copyright (c) 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SOURCE_FUZZ_TRANSFORMATION_STORE_H_
#define SOURCE_FUZZ_TRANSFORMATION_STORE_H_
#include "source/fuzz/protobufs/spirvfuzz_protobufs.h"
#include "source/fuzz/transformation.h"
#include "source/fuzz/transformation_context.h"
#include "source/opt/ir_context.h"
namespace spvtools {
namespace fuzz {
class TransformationStore : public Transformation {
public:
explicit TransformationStore(protobufs::TransformationStore message);
TransformationStore(
uint32_t pointer_id, bool is_atomic, uint32_t memory_scope,
uint32_t memory_semantics, uint32_t value_id,
const protobufs::InstructionDescriptor& instruction_to_insert_before);
// - |message_.pointer_id| must be the id of a pointer
// - The pointer type must not have read-only storage class
// - The pointer must not be OpConstantNull or OpUndef
// - |message_.is_atomic| must be true if want to work with OpAtomicStore.
// - If |is_atomic| is true then |message_memory_scope_id| must be the id of
// an OpConstant 32 bit integer instruction with the value
// SpvScopeInvocation.
// - If |is_atomic| is true then |message_.memory_semantics_id| must be the id
// of an OpConstant 32 bit integer instruction with the values
// SpvMemorySemanticsWorkgroupMemoryMask or
// SpvMemorySemanticsUniformMemoryMask.
// - |message_.value_id| must be an instruction result id that has the same
// type as the pointee type of |message_.pointer_id|
// - |message_.instruction_to_insert_before| must identify an instruction
// before which it is valid to insert an OpStore, and where both
// |message_.pointer_id| and |message_.value_id| are available (according
// to dominance rules)
// - Either the insertion point must be in a dead block, or it must be known
// that the pointee value of |message_.pointer_id| is irrelevant
bool IsApplicable(
opt::IRContext* ir_context,
const TransformationContext& transformation_context) const override;
// Adds an instruction of the form:
// OpStore |pointer_id| |value_id|
// before the instruction identified by
// |message_.instruction_to_insert_before|.
void Apply(opt::IRContext* ir_context,
TransformationContext* transformation_context) const override;
std::unordered_set<uint32_t> GetFreshIds() const override;
protobufs::Transformation ToMessage() const override;
private:
protobufs::TransformationStore message_;
};
} // namespace fuzz
} // namespace spvtools
#endif // SOURCE_FUZZ_TRANSFORMATION_STORE_H_
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